Environmental assessment of eutrophication or heavy metals in urban lakes is an important reference for identifying the pollution degree and formulating pollution prevention strategies. At present, the most research on lake health states is often evaluated from a single angle for toxic metals pollution or eutrophication using the standard comparison method for both, the comprehensive trophic level index (TLI), and the health risk assessment for toxic metals. Moreover, the above deterministic methods probably lead to biased or unreliable assessment due to the randomness and fuzziness in environment system caused by natural change and human activities. In this paper, a fuzzy comprehensive lake health assessment method (FCLHAM) was established to evaluate comprehensive lake health states more comprehensively and accurately, which integrates quantitative eutrophication and health risk considerations. To test and verify FCLHAM, 21 lakes, scientifically selected from the total 143 lakes in the Chinese Wuhan city as study case, were investigated and analyzed for their state of eutrophication and the health risk posed by heavy metals. According to the FCLHAM, the average comprehensive lake health state decreased in the sequence of L20 (considerate risk level) > L1–L17, L19, L21 (moderate risk level) > L18 (low risk level). Based on the result, lakes were classified into three categories: general management (L18), enhanced management (L1–L17, L19, L21), and priority management (L20). If the 143 lakes in Wuhan were classified by the “area-region-function” classification, they would be assigned to the same category as the representative lakes of the same type. At this point, we will attribute all of Wuhan’s lakes to the three types. Depending on the characteristics of each type, a targeted approach to different types of management for each type of lake is a more efficient way to manage many of Wuhan’s lakes. This management mode also serves as an effective reference for the environmental management of urban lakes both at home and abroad. In other words, according to the FCLHAM, a hierarchical management system based on lake characteristics classification was obtained.

The protection and management of lakes is closely related to people’s quality of life and the rapid development of urban economy, and it is also an important aspect of realizing ecological sustainability. Hubei Province has over 1000 lakes, so the importance of the protection and governance of lakes is self-evident. Since the Lake Protection Regulations of Hubei Province came into being, Hubei Province has achieved the gradual extension and improvement of the system of responsibility for the protection of the lake. In order to understand the development of the system of responsibility for the protection of the lake and to explore the shortcomings in the implementation of the lake management system, this paper takes Wuhan city, capital of Hubei Province, as an example, as the object of research and evaluates the implementation effect of the lake protection mechanism and system after the promulgation of Hubei Province Lake Protection Regulations. According to the evaluation results, since the implementation of the regulations, the formal protection of lakes in Wuhan city has been promoted step by step, and the effect of lake management has also been remarkable. The government attaches great importance to lake protection, and the enthusiasm of government staff participating in this is increasing. However, the evaluation results also reveal some weaknesses of the current system of lake protection and governance, including the protection of lake quality, the perfection of the annual appraisal system and the administrative responsibility system, and the optimization of the lake garbage disposal system. On the basis of the results, this paper puts forward countermeasures and ideas to perfect the mechanism and system of lake protection and management in Wuhan city, in order to provide reference for the lake protection and management in other areas.